APA (7e ed.) Bronvermelding

Não informado. (1960). List of Bureau of Mines publications and articles with subject and author index. U.S. Department of the Interior, Bureau of Mines.

Chicago (17e ed.) Bronvermelding

Não informado. List of Bureau of Mines Publications and Articles with Subject and Author Index. Washington: U.S. Department of the Interior, Bureau of Mines, 1960.

MLA (8e ed.) Bronvermelding

Não informado. List of Bureau of Mines Publications and Articles with Subject and Author Index. U.S. Department of the Interior, Bureau of Mines, 1960.

Let op: Deze citaties zijn niet altijd 100% accuraat.